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稠油生产中,为了降低管线内原油流动阻力,大多是采用加热的方式。例如采用蒸汽线与油管线并行,利用热传递的方式给管线内的原油加热。但是现场使用中对于伴热使用量始终没有一个计算方法,往往是通过估计或者经验来判断伴热蒸汽使用量。伴热蒸汽量使用了多少、对于管网蒸汽压力的影响、对于注汽井效果的影响、一直没有具体的理论数值。本论文就是针对这种情况,研究对于伴热蒸汽使用量的计算方法,通过计算求得油井伴热需要消耗的蒸汽量,对于现场蒸汽使用具有参考意义,尤其是对于注汽井的注汽安排提供比较可靠的理论依据。 相似文献
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介绍我厂蒸汽管网概况,并对蒸汽吹扫原理和参数测算进行分析,制定吹扫方案。介绍我厂蒸汽管线吹扫的流程和吹扫中的问题和原因分析及解决措施。通过总结分析,加深对蒸汽吹扫理论和实际操作方法的认识,对于同类蒸汽管线吹扫具有参考意义。 相似文献
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以某大型煤制天然气项目为例,对高压过热蒸汽管网的水力学及吹扫参数进行研究。采用化工流程模拟软件ASPEN HYSYS对蒸汽管网进行建模计算,找到了一种定量分析计算蒸汽吹扫参数的方法。 相似文献
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本文针对稠油蒸汽吞吐阶段采收率计算的基本原理和适用条件,对稠油油藏蒸汽吞吐开发条件下确定采收率的类比法、多元回归法、注采特征曲线法、增长曲线法、递减曲线法、粘温曲线法、数值模拟法等方法进行了归类对比分析,形成了稠油油藏蒸汽吞吐阶段原油采收率确定方法系列,指出目前较为常用的原油采收率计算方法,得到了计算效果较好的原油采收率计算方法。 相似文献
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目前国内各大油田对于稠油油藏的开采普遍采用的是蒸汽吞吐热采方法,该方法作业的过程大致可分为三个阶段,即注汽、焖井及回采。而在油田地面建设中通常将从湿蒸汽锅炉蒸汽出口至单井井口的管线统称为高温高压注蒸汽管线,简称为注汽管线。由于该管线运行介质为高温高压蒸汽,一旦管线出现问题极易造成较大的事故,轻则造成油田正常生产受到影响,重则造成人员伤亡事故的出现,因此有必要对其施工组织管理进行总结规范。在结合国家相关施工验收规范、技术标准的基础上,笔者结合近几年来油田注汽管线施工取得的一些经验教训,对高温高压注汽管线的施工组织与管理进行梳理,并对施工过程中的关键点进行了总结,期望能够给该类管线的施工组织与管理提供一些借鉴和经验。 相似文献
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吴艳 《中国石油和化工标准与质量》2019,(18):111-112
从蒸汽伴热管线设置、调节能力及对凝结水管网的影响方面分析热带地区原油罐区蒸汽伴热系统的缺陷,通过不同改进伴热方式特点及优缺点分析,提出伴热系统改进方法,并以处于热带地区的东方石化原油罐区伴热为例进行分析计算,得出蒸汽伴热改低温热水伴热时经济可行的结论。 相似文献
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介绍了E-304乙苯蒸发器原进料条件下高能耗的原因分析,针对存在问题提出了投用热乙苯进料线的优化方案。乙苯蒸发器乙苯热进料线投用后,在同样的进料量,脱氢水比和反应压力情况下,0.35 MPaG汽化蒸汽用量节省了0.6 t/h,年可节省蒸汽约0.50万t,1.0 MPaG蒸汽年消耗量减少了168 t,F-301过热蒸汽加热炉的燃料气用量节省0.02 t/h,年可节省198.33 t,节能降耗效果非常显著。 相似文献
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In an attempt to find an on‐line method to remove oxide deposited during normal operation on the primary side of a steam generator, a series of experiments was undertaken in a high temperature recirculating autoclave system. Alloy‐600 steam generator tubes removed from a CANDU nuclear reactor were monitored on‐line with a gamma spectrometer and the effects on them of transients in pH, oxidizing condition of the coolant and temperature, alone and in combination, were attempted. Only a chemical process—the addition of a mixture of ethylenediaminetetraacetic acid (EDTA) and citric acid—was effective in removing radioactivity and, therefore, oxide. 相似文献
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Archie B. Maglaya 《Fuel》2005,84(1):29-35
The fast depletion of fuel oil and the continuous increase in the demand for power is a global issue. In the Philippines, the demand for diesel oil is expected to increase significantly in a 20-year period as projected by the Department of Energy. In line with the Philippine Government's thrust to lessen the dependence on imported energy, the agenda for the search for alternative fuel is highly prioritized. Thus, this paper presents the results of the study on performance analysis and efficiency test of a diesel oil fired industrial steam generator using Philippine Calatrava coal-diesel oil mixture (CDOM) as alternative fuel. A computer program was developed in HyperText Markup Language (HTML©) and JavaScript© to aid the computation of the adiabatic flame temperature from the governing system of equations based on the heat interaction between CDOM fuel, combustion air and products of combustion to determine the most desirable alternative fuel. Actual experimentation for the determination of CDOM fuel properties was also conducted to verify the alternative fuel selected through theoretical calculations. Results showed that the CDOM fuel with a particle size passing 75 μm (−200 mesh) sieve having a proportion of 5% pulverized coal-95% diesel oil and 10% pulverized coal-90% diesel oil could be handled throughout the test with no degradation of the industrial steam generator. The steam generator efficiency using diesel oil is close to the steam generator efficiency using both CDOM fuels. 相似文献
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针对目前采用的蒸汽检漏法存在种种弊端,简述氨红外分析技术检测尿素合成塔泄漏的方法、系统设置、技术特点及应用实例。 相似文献
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根据大型储油罐清洗要求提出了高温蒸汽清洗机设计方案,通过分析高温蒸汽清洗原理,采用高压蒸汽喷射泵做为高温蒸汽发生源,用高速数字信号处理器为核心的控制系统对清洗过程进行实时检测和控制,并对清洗效果在线检测。高温蒸汽清洗机可有效地解决大型储油罐清洗问题,具有广范的推广应用价值。 相似文献
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针对许多熟料生产线的剩余余热蒸汽,设计了蒸汽—电联合动力方式,通过工业汽轮机与电动机联轴运行,实施水泥厂大型转动设备的蒸汽—电联合动力。实现了以较低的成本,扩展水泥厂余热蒸汽的利用范围,降低熟料生产线的用电量。论文对比分析余热发电与蒸汽—电联合动力的效率,结果表明,蒸汽—电联合动力有更高的效费比,更低的投资与运行费用。 相似文献
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The work considers the application of the flash drying to the moisture removal of fishmeal using superheated steam as transport medium. Heat, momentum and mass transfer equations were applied and an algorithm based on these equations was developed and solved. The model was validated using experimental data obtained in a pilot pneumatic dryer ( total length 60 m) provided with a steam jacket to maintain the superheated steam at a constant temperature. The drying time was less than 10 s to decrease the fish meals moisture content from 53.5% to 28% d.b. and in a second pass by the dryer the moisture down to 16.9% using superheated steam at It 1 ° C and 130 ° C in the jacket. The computational results are in agreement with the experimental data. 相似文献
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注汽管线内的高温高压湿蒸汽为多相流体,因此给蒸汽干度和蒸汽质量流量的在线测量带来很大的困难。为了准确计量蒸汽的量,提高能量的利用率,开展注汽管线内的蒸汽两相流计量意义重大。V锥"体积变化"式注汽锅炉蒸汽流量和干度在线测量原理,解决了在线干度的测量与控制问题。因此V锥在线测量系统精确标定十分重要。 相似文献